A dual-purpose imaging device, PET/CT is literally the combination of PET (positron emission tomography) and CT (computed tomography) imaging techniques within a single machine. The individual scans, which are taken virtually simultaneously, can be presented separately or as a single, overlapping, or "fused" image. The two techniques present different types of information about the human body: PET shows metabolic or chemical activity in the body; CT shows the body's anatomical structures. For example, a PET scan would highlight a tumor's increased glucose consumption, while a CT scan would reveal its physical mass.

Taking the two scans virtually simultaneously ensures that the patient remains in place and, therefore, that the two images form a precise computer overlay—that the tumor "hot spot" on the PET scan corresponds directly to the physical mass on the CT scan. This fused image is designed to provide a more reliable alternative to the traditional side-by-side visual comparison of PET and CT images.

Radiation Oncologists can use PET/CT's combined information about metabolic activity and anatomical location to better tailor radiation fields—reaching cancer cells while avoiding damage to the surrounding healthy tissue.

Surgeons can use PET/CT to pinpoint exactly where to perform a biopsy or surgical excision.

PET/CT fusion imaging is a valuable tool for lung cancer and cancers located in regions of the body that have a complicated anatomy, such as the neck and lower pelvis. These areas of the body contain organs, tissue, muscles, bones, lymph nodes, air, fluids, etc., all in close proximity—making the precise overlay of PET and CT particularly helpful. Similarly, PET/CT can aid in multifocal diseases, such as lymphoma, by providing more exact locations for biopsies and surgery.

Depending on your clinical situation, PET scanning has been proven to be critical in the following tumor types:  

• Lung cancer
• Lymphoma
• Colorectal cancer
• Melanoma
• Head and neck cancer
• Breast cancer

Click here for helpful information and preparation details for a PET/CT imaging procedure.

PET/CT imaging services are available through the Cypress Fairbanks Urgent Care Center, a part of the Cy-Fair Regional Health Network. 

To schedule a PET/CT, call 281-897-3121. A physician's order is required. Appointments are available every Monday beginning as early as 8 a.m.